A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5950-01-519-2709
NSN 6320-00-360-1744
NSN 5905-00-935-1142
NSN 6620-00-220-2157
NSN 5945-01-286-4317
NSN 2925-01-039-6856
NSN 6110-00-387-3911
NSN 6110-01-468-9797
NSN 5925-01-377-5890
NSN 2925-01-280-1911
NSN 4140-01-467-1986
NSN 6685-01-579-2248